Help Me?

Last year, i had it all. The perfect girlfriend, the one I wanted to spend the rest of my life with. My friends were amazing. I have the perfect car. Scholarships waiting for me. Big fancy house, everything you could dream of, right? Wrong. Starting about January of 2011, I was accused of cheating. I would never do that, I respect a girl more than that. We worked through it. Just over time she kept accusing me. She broke it off. I lost my heart. I thought everything was over. I cried day in and day out. Tried to kill myself twice. Didnt exactly work how i had planned. I somehow picked myself up everyday. Never moved on. That summer a new kid, he has some mental disabilities, all my friends like to call him a retard, tell him to go get his helmet, all sorts of stupid **** I didn't approve of. So I spoke up, I know what it's like to be bullied all my life. I did it in a respectable manner. They turned on me, every single one of my friends. They started rumors about me, ones that I still haven't heard about. My bestfriends, the only thing I've ever had besides her. At this point I said **** life, I was done. A couple days after, me and my parents were riding in the car. We lost control and rolled over an overpass. I survived, they didn't. So where was I at? In a hospital with no one. I was put on depression medicines, which I only found made me worse. No parents, no friends, no one to care. The day I got out I overdosed intentions of killing myself, I was pronounced dead and then revived. Of course I was immediately admitted into a physc ward for 2 months. I've recently just got out. I hate waking up in a residential home, everyday telling myself it will get better but it won't. I'm in a crisis right now, I can't do anything but cry and cut my wrist, I'm afraid to say this is it.. I can't look into the mirror any longer and look at the mistake I've become, please someone help, I know there's worse people out there but soon it's going to become one less person in this world, who really cares?..:/